And it benefits the ALS Association, a charity dedicated to fighting the motor-neuron condition, also called Lou Gehrig's disease.

It's the #IceBucketChallenge, and it is has spiraled into mega viral mode.

"Here's how it works," according to the ALS Association Arizona chapter:

1. In an effort to raise ALS awareness and funds, people are recording themselves getting doused with buckets of ice-cold water and then challenging others to do the same within 24 hours!

2.The photos and videos are posted and shared on Facebook, Twitter and YouTube. Those who refuse the challenge are asked to make a $100 donation to the ALS Association Arizona chapter.

3. We invite all Ice Bucket Challenge participants to make a donation too -- it is only together that we can defeat ALS! Click here to make a donation.

Between July 29 and Aug. 12, the viral video challenge raised an "astonishing" $4 million for ALS, according to a press release.

Celebrities like Jimmy Fallon, tech execs like Facebook's Mark Zuckerberg and at least one entire NFL team, the New England Patriots, have done videos of them getting soaked.

In Arizona, dumpees range from U.S. Rep. Kyrsten Sinema to Cardinals head coach Bruce Arians and a rink full of Coyotes players, including Shane Doan, Mike Smith and Keith Yandle.

"In the last two weeks, the Ice Bucket Challenge has quite literally 'soaked' the nation," the release said. "Everyone from Ethel Kennedy to Justin Timberlake has poured a bucket of ice water over his or her head and challenged others do the same or make a donation to fight ALS within 24 hours."

The ALS Association and its 38 chapters received just $1.12 million during the same time period last year.

"We have never seen anything like this in the history of the disease," said Barbara Newhouse, president and CEO of the ALS Association. "We couldn't be more thrilled with the level of compassion, generosity and sense of humor that people are exhibiting as they take part in this impactful viral initiative."